drm/nvc0/gr: port mp trap handling from calim's kepler code

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 38 insertions, 6 deletions

diff --git a/drivers/gpu/drm/nouveau/core/engine/graph/nvc0.c b/drivers/gpu/drm/nouveau/core/engine/graph/nvc0.c
index f9b9d82c287f..af40e654ac89 100644
--- a/drivers/gpu/drm/nouveau/core/engine/graph/nvc0.c
+++ b/drivers/gpu/drm/nouveau/core/engine/graph/nvc0.c
@@ -237,6 +237,43 @@ nvc0_graph_ctxctl_isr(struct nvc0_graph_priv *priv)
         nv_wr32(priv, 0x409c20, ustat);
 }
 
+static const struct nouveau_enum nvc0_mp_warp_error[] = {
+        { 0x00, "NO_ERROR" },
+        { 0x01, "STACK_MISMATCH" },
+        { 0x05, "MISALIGNED_PC" },
+        { 0x08, "MISALIGNED_GPR" },
+        { 0x09, "INVALID_OPCODE" },
+        { 0x0d, "GPR_OUT_OF_BOUNDS" },
+        { 0x0e, "MEM_OUT_OF_BOUNDS" },
+        { 0x0f, "UNALIGNED_MEM_ACCESS" },
+        { 0x11, "INVALID_PARAM" },
+        {}
+};
+
+static const struct nouveau_bitfield nvc0_mp_global_error[] = {
+        { 0x00000004, "MULTIPLE_WARP_ERRORS" },
+        { 0x00000008, "OUT_OF_STACK_SPACE" },
+        {}
+};
+
+static void
+nvc0_graph_trap_mp(struct nvc0_graph_priv *priv, int gpc, int tpc)
+{
+        u32 werr = nv_rd32(priv, TPC_UNIT(gpc, tpc, 0x648));
+        u32 gerr = nv_rd32(priv, TPC_UNIT(gpc, tpc, 0x650));
+
+        nv_error(priv, "GPC%i/TPC%i/MP trap:", gpc, tpc);
+        nouveau_bitfield_print(nvc0_mp_global_error, gerr);
+        if (werr) {
+                pr_cont(" ");
+                nouveau_enum_print(nvc0_mp_warp_error, werr & 0xffff);
+        }
+        pr_cont("\n");
+
+        nv_wr32(priv, TPC_UNIT(gpc, tpc, 0x648), 0x00000000);
+        nv_wr32(priv, TPC_UNIT(gpc, tpc, 0x650), gerr);
+}
+
 static void
 nvc0_graph_trap_tpc(struct nvc0_graph_priv *priv, int gpc, int tpc)
 {
@@ -251,12 +288,7 @@ nvc0_graph_trap_tpc(struct nvc0_graph_priv *priv, int gpc, int tpc)
         }
 
         if (stat & 0x00000002) {
-                u32 trap0 = nv_rd32(priv, TPC_UNIT(gpc, tpc, 0x0644));
-                u32 trap1 = nv_rd32(priv, TPC_UNIT(gpc, tpc, 0x064c));
-                nv_error(priv, "GPC%d/TPC%d/MP: 0x%08x 0x%08x\n",
-                               gpc, tpc, trap0, trap1);
-                nv_wr32(priv, TPC_UNIT(gpc, tpc, 0x0644), 0x001ffffe);
-                nv_wr32(priv, TPC_UNIT(gpc, tpc, 0x064c), 0x0000000f);
+                nvc0_graph_trap_mp(priv, gpc, tpc);
                 nv_wr32(priv, TPC_UNIT(gpc, tpc, 0x0508), 0x00000002);
                 stat &= ~0x00000002;
         }